Exceptions and Error Handling

# Python does very little checking at compile and execution time 

# Exception - an error that happens during execution 

# Handle file does not exist error - prints the message regardless of the error 
try: 
	f = open("adadsdasddasdasd")
except: 
	print("The file does not exist.")
	
# Handle the file does not exist error - prints the specific error 
try: 
	f = open("adsdsdsdsdsd")
except FileNotFoundError: 
	print("The file does not exist.")
except Exception as e: 
	print(e)
finally: 
	print("this message") # This will always execute 
	
	
n = 100 
if n == 0: 
	raise Exception("n can't be 0.")
if type(n) is not int: 
	raise Exception("n must be an int")
print(1/n)

# Assertion is like hard error checking 
n = 1 
assert (n != 0)
print(1/n)